238770449 has 2 divisors, whose sum is σ = 238770450. Its totient is φ = 238770448.

The previous prime is 238770439. The next prime is 238770451. The reversal of 238770449 is 944077832.

238770449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141610000 + 97160449 = 11900^2 + 9857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238770449 is a prime.

It is a super-2 number, since 2×238770449² = 114022654631323202, which contains 22 as substring.

Together with 238770451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (238770439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119385224 + 119385225.

It is an arithmetic number, because the mean of its divisors is an integer number (119385225).

Almost surely, 2^238770449 is an apocalyptic number.

It is an amenable number.

238770449 is a deficient number, since it is larger than the sum of its proper divisors (1).

238770449 is an equidigital number, since it uses as much as digits as its factorization.

238770449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 238770449 is about 15452.1988402945. The cubic root of 238770449 is about 620.3834334757.

The spelling of 238770449 in words is "two hundred thirty-eight million, seven hundred seventy thousand, four hundred forty-nine".